NORTH ANDOVER, MA — Peter MacArthur scored two goals and senior captain Sean Sullivan added three assists as No. 6 Boston University defeated Merrimack College 4-1 in Hockey East action Saturday night at Lawler Arena.

Freshman J.C. Robitaille (Des Ruisseaux, Quebec) scored his first collegiate goal for the Warriors, who fell to 0-3 (0-1 HEA) on the season. The Terriers, who edged Northeastern 4-3 Friday night in their Hockey East opener, improved to 2-0-1 (2-0 HEA) on the season.

The Warriors killed two quick BU power plays and then capitalized on one of their own to take a 1-0 lead at 4:49 of the opening period. Freshman Pat Bowen (Marshfield, MA) fed the puck to senior Mike Alexiou (Pickering, Ontario) in the right corner, who found Robitaille in front of the net for MC’s first power play tally of the season.

Merrimack killed off the Terriers third power play early in the first, but BU capitalized on their fourth power play late in the first period to even the score. Sullivan took a pass from MacArthur and threw a shot at the net that snuck through a screen and past senior netminder Jim Healey (Holyrood, N.F.).

MacArthur scored his first goal of the night with a man-advantage at 7:54 of the second period, as his shot from the point found its way through Healey’s legs and put BU on top 2-1. His second power-play goal of the night at 5:52 of the third period came off a scramble in front of Healey and pushed the lead to 3-1

With the Warriors on a power-play late in the third and Healey on the bench to give them a two-man advantage, Kenny Roche grabbed a clearing attempt off the boards from Sullivan and fired the puck into the empty net to seal the 4-1 win.

The Terriers finished the evening 3-for-9 on the power play while the Warriors were 1-for-5. Healey finished the night with 21 saves as he fell to 0-2 on the season. John Curry, meanwhile, stopped 16 shots for his second win of the season.

The Warriors return to action this Tuesday when they host The College of Holy Cross at 7 p.m.